Switch stacking is to combine multiple switch devices that support stacking features, and then use dedicated cables and modules to plug in ports with stacking functions, connect these switches together, and combine them logically into a switching device. Network topology refers to the way in which the links and nodes of a network are arranged in relation to each other. My ask is, how I can create stack between switches using fiber cable (1000BaseSX SFP), I am attaching the pic of closet for better. For details about the stack cables that apply to different ports on different switch models, see Stack Support and Version Requirements in the product documentation. When connecting stack cables, pay attention to the following points: The maximum length of an optical fiber or optical cable is 10 m. The connection between two or more Ethernet switches in a certain way (Uplink port, etc.